Move component updater artifacts into component_updater namespace.

chrome/browser/component_updater/default_component_installer.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/values.h"
 #include "base/version.h"
 // TODO(ddorwin): Find a better place for ReadManifest.
 #include "chrome/browser/component_updater/component_unpacker.h"
 #include "chrome/browser/component_updater/default_component_installer.h"
 #include "content/public/browser/browser_thread.h"
 
+namespace component_updater {
+
 namespace {
 // Version "0" corresponds to no installed version. By the server's conventions,
 // we represent it as a dotted quad.
 const char kNullVersion[] = "0.0.0.0";
 }  // namespace
 
 ComponentInstallerTraits::~ComponentInstallerTraits() {
 }
 
 DefaultComponentInstaller::DefaultComponentInstaller(
@@ skipping 175 matching lines @@
 
   if (current_version_.CompareTo(base::Version(kNullVersion)) > 0) {
     scoped_ptr<base::DictionaryValue> manifest_copy(
         current_manifest_->DeepCopy());
     installer_traits_->ComponentReady(
         current_version_,
         GetInstallDirectory(),
         manifest_copy.Pass());
   }
 }
+
+}  // namespace component_updater
+